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US2885358A
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Water-in-oil emulsion well fluid and materials for preparing same
Assignee: Magnet Cove Barium Corp
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Filing: 1954-09-16
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Granted: 1959-05-05
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Expires: 1974-09-16
Abstract
No abstract record available.
Inventors
- 👤 William A Reddie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 07:41
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/02; C09K8/32; C09K8/36; Y; Y10; Y10S; Y10S507/00; Y10S507/904
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1784360A
Cited
US1993771A
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US2350154A
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US2582323A
Cited
US2661334A
Cited
US2689219A
Cited
US2754265A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-05-04 | 1962-11-03 | 1963-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-05-04 | 1966-11-03 | 1967-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-05-04 | 1970-11-03 | 1971-05-05 | $7700.00 | Window Closed / Lapsed |